Manchester United goalkeep David de Gea attends an Open Training Session at the University of California (UCLA), July 14, 2017 in Los Angeles, California.Robyn Beck / AFP
Manchester United goalkeep David de Gea attends an Open Training Session at the University of California (UCLA), July 14, 2017 in Los Angeles, California.Robyn Beck / AFP

Jose Mourinho 'guarantees' David de Gea will remain at Manchester United